Centroid Calculator is an online tool used to determine the centroid of any triangle when the vertices are known.The centroid of the triangle is the intersection of the medians of a triangle. If we have an object then the centroid of that object is its centre. The triangle’s centroid separates the median in the ratio 2:1. The average of the x-coordinate’s value and the average of the y-coordinate’s value is the centroid of the triangle.